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Ensemble averaging represents the average of ____________

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Ensemble averaging represents the average of ____________

(a) unsteady quantities

(b) steady quantities

(c) identical quantities

(d) mean quantities

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I would like to ask this question from Turbulence Modelling topic in section Turbulence Modelling of Computational Fluid Dynamics

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The correct choice is (c) identical quantities

Easiest explanation: This is useful for identical quantities. Identical in the sense, that they have similar properties in some concern. A number of quantities which have the simultaneous variations can be averaged using this method.

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